Depending on the situation, Black may also choose to treat one of the stones in the formation lightly for the sake of development.[1] This type of sequence might be appropriate if White is strong in the upper right, as here. In that case Black a, White b might be good for White, and Black is better allowing in return for .

Bill: In this particular situation, is problematic because it approaches White's wall, while extending only to a instead of allows White to play at b.

Prepare the way

Bill: To avoid the problems of an immediate extension, - press against , preparing for a safe extension to .

Charles This idea of Bill's, to use the 3-5 point low approach, press, is a bit more subtle than may seem at first glance. For example, is held back one line, giving White much less chance of fighting on this side.